<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>
	<div>
		<from action="#" name = "demo">
			<input type="text" placeholder="please input your name" value = "jack">

			<input type="password">
			<input type="radio" name = "gender">male
			<input type="radio" name="gender">femal
			<input type="checkbox" value="swim">swim
			<input type="checkbox" value="smoke">smoke
			<input type="checkbox" value="girl">girl

			<input type="file">
			<input type="submit">
			<input type="reset">
		</from>
	</div>
</body>
</html>